CN204537417U - Based on the transformer partial discharge on-line monitoring system of ZigBee technology - Google Patents
Based on the transformer partial discharge on-line monitoring system of ZigBee technology Download PDFInfo
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- CN204537417U CN204537417U CN201420568819.3U CN201420568819U CN204537417U CN 204537417 U CN204537417 U CN 204537417U CN 201420568819 U CN201420568819 U CN 201420568819U CN 204537417 U CN204537417 U CN 204537417U
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- transformer
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Abstract
The utility model provides a kind of On Line PD Monitoring of Transformer system based on ZigBee technology, the ultrasonic signal of multiple stage transformer can be monitored by this system simultaneously, ZigBee data acquisition network is utilized to monitor multiple stage transformer, mechanical shock signals in multiple stage transformer is by the optical fiber transmission module (1) corresponding to it, be transferred to each PVDF piezoelectric film sensor (2), these sensors composition data acquisition network, transformer real-time information will be passed to coordinator node (4) by data acquisition network, then transfer to DSP control treatment center (5) and carry out analyzing and processing, thus the level of electrical network United Dispatching is improve by combined monitoring network.
Description
Technical field:
The utility model relates to a kind of novel transformer partial discharge on-line monitoring system, belongs to the field such as electric automatization, wireless transmission.
Background technology:
In the past for the discussion of transformer partial discharge on-line monitoring, often be only limitted to the improvement of the monitoring method of single transformer, and do not consider in monitoring at the scene, the system of multiple stage transformer composition needs structure combined monitoring network, to fully utilize the monitoring information of whole system, thus improve dispatching efficiency.In the monitoring method of transformer partial discharge, monitoring ultrasonic can be measured under operation, little by electrical Interference, can realize remote-wireless and measure.But current sonac sensitivity is very low, cannot effectively be applied at the scene.
Emerging ZigBee technology has the advantage of low complex degree, self-organization, low-power consumption, high data rate, low cost, is applicable to very much being applied to automatically controlling and Long-distance Control.In reliability, ZigBee have employed spread spectrum in Physical layer, can resist interference to a certain extent; In energy consumption, when not needing communication, node energy consumption approximately only has per mille during normal work; From the angle of networking and routability, ZigBee has large-scale networking capability, can arrange the network of wide range.
PVDF piezoelectric membrane is a kind of novel polymer piezoelectric transductive material.In ultrasonic monitoring, compared with PZT piezoelectric ceramics, PVDF piezoelectric film sensor has better performance.PVDF piezoelectric film sensor through encapsulation has the following advantages: PVDF piezoelectric film sensor is highly sensitive; Highfield effect can be tolerated; PVDF piezoelectric membrane acoustic impedance is only 1/10th of PZT, and after being packaged into sensor, degree of accuracy is very reliable.
Utility model content:
On the basis of the ZigBee-network communication technology, establish this transformer partial discharge on-line monitoring system, thus achieve the associating on-line monitoring of multiple stage transformer.
This system is made up of optical fiber transmission module, PVDF piezoelectric film sensor, anti-interference equipment, coordinator node module and DSP control treatment center module.In monitoring network, the mechanical shock signals in multiple stage transformer is by the Optical Fiber Transmission corresponding to it to each wireless PVDF piezoelectric film sensor node, and these sensor nodes form data acquisition network.Transformer real-time information will be passed to coordinator node by data acquisition network, then transfer to DSP control treatment center and carry out analyzing and processing.Therefore this process can be monitored the transformer that multiple stage monitoring network covers simultaneously, thus is conducive to the United Dispatching of electrical network.
Wherein, information acquisition ZigBee technology used be a kind of closely, low energy consumption, simple possible, cost-saving bidirectional wireless communication technology, the communication that multiple stage sensor carries out with the communication of multi-hop coordinating mutually can be installed in its network, thus improve work efficiency.Introduce PVDF piezoelectric film sensor, the advantage of the ultrasonic monitoring of transformer partial discharge can be made full use of, reach minor interference, highly sensitive effect, thus provide reliable monitoring information to originate for remote-wireless measurement.
Accompanying drawing illustrates:
Accompanying drawing 1 is transformer ultrasonic monitoring system network architecture figure
Accompanying drawing 2 is coordinator node hardware frame figure
Embodiment:
Native system forms ultrasound data transmission network by optical fiber transmission module (1), PVDF piezoelectric film sensor (2), anti-interference equipment (3) etc., realizes judgement to partial discharge of transformer in system and decision-making by coordinator node (4) and DSP control treatment center (5).Wherein, coordinator node (4) is by processor unit, and memory cell, I/O unit and power supply unit form.
In monitoring network, mechanical shock signals in multiple stage transformer is transferred to each PVDF piezoelectric film sensor (2) by the optical fiber transmission module (1) corresponding to it, these PVDF piezoelectric film sensors (2) composition data acquisition network.
Because this monitoring system long-term work is in the environment of high pressure, inherently be subject to very strong electromagnetic interference, the various electric discharges simultaneously produced in inside transformer and transmission line of electricity also will form very strong transient noises interference, and these factors all can the normal operation of influential system.Anti-interference equipment (3) in native system adopts the method for electromagnetic screen, namely utilizes electromagnetic induction phenomenon effectively to avoid PVDF piezoelectric film sensor (2) to be subject to extraneous electromagnetic effect.Its principle is external electromagnetic field once alternation, in shielding case, the contrary induction field of generation is offset the impact of external electromagnetic field on shielding case inside.
In transformer, hyperacoustic real-time information will be passed to coordinator node (4) by data transmission network, then transfer to DSP control treatment center (5) and carry out analyzing and processing.Therefore, this process can be monitored the transformer that multiple stage monitoring network covers simultaneously, thus is conducive to the United Dispatching of electrical network.
Claims (2)
1. the transformer partial discharge on-line monitoring system based on ZigBee technology, system is made up of optical fiber transmission module (1), PVDF piezoelectric film sensor (2), anti-interference equipment (3), coordinator node (4) and DSP control treatment center (5), it is characterized in that, mechanical shock signals in multiple stage transformer is by the optical fiber transmission module (1) corresponding to it, be transferred to each PVDF piezoelectric film sensor (2), these PVDF piezoelectric film sensors (2) composition data acquisition network; Anti-interference equipment (3) adopts the method for electromagnetic screen, namely utilizes electromagnetic induction phenomenon effectively to avoid PVDF piezoelectric film sensor (2) to be subject to extraneous electromagnetic effect; In transformer, hyperacoustic real-time information will be passed to coordinator node (4) by PVDF piezoelectric film sensor (2), then transfer to DSP control treatment center (5) and carry out analyzing and processing.
2. transformer partial discharge on-line monitoring system according to claim 1, it is characterized in that, described coordinator node (4) is made up of processor unit, memory cell, I/O unit and power supply unit, this part take processor unit as core, processor unit is responsible for processing data, carries out scheduling controlling to the work of other unit; Memory cell is responsible for the storage of data; I/O unit carries out the transmission of data, comprises radio remote Distance Transmission and two kinds of interface transmission; Power supply unit provides electric energy for unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568819.3U CN204537417U (en) | 2014-09-30 | 2014-09-30 | Based on the transformer partial discharge on-line monitoring system of ZigBee technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568819.3U CN204537417U (en) | 2014-09-30 | 2014-09-30 | Based on the transformer partial discharge on-line monitoring system of ZigBee technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204537417U true CN204537417U (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420568819.3U Expired - Fee Related CN204537417U (en) | 2014-09-30 | 2014-09-30 | Based on the transformer partial discharge on-line monitoring system of ZigBee technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204537417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567815A (en) * | 2021-07-21 | 2021-10-29 | 西安交通大学 | Flexible piezoelectric ultrasonic sensing system for monitoring partial discharge of power equipment |
-
2014
- 2014-09-30 CN CN201420568819.3U patent/CN204537417U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567815A (en) * | 2021-07-21 | 2021-10-29 | 西安交通大学 | Flexible piezoelectric ultrasonic sensing system for monitoring partial discharge of power equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20160930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |